Bumper



H. s. JANDUS Jan. l2, 1932.

BUMPER Filed Feb. 14, 1930 2 sheets-sheet 1 i w i m.

amiga,

Jan. 12, 1932.r l H` s. JANDUs BUMPER Filed Feb. 14, 1930 2 Sheets-Sheet 2 ilu.

INVENTQK WJ( v 001.4%

lBY

A TTORNEY.

' ramas Jan. 12, i932 s. sumas, or nnrnon', :moineau Application led February 14, 1930. Serial No'. 428,879.

This invention relates to a bumper construction and has for its principal object to provide in such a construction a clamp plate having a clamping bolt attached thereto in such a i manner .that a continuous finished outer surface may be provided without the necessity of providing a separate sheet of metal to be nished,'thereby securing a simple and durable construction without introducing avoidable complexities of structure.

Referring to the accompanying drawings, Fig. 1 is a fragmentary front elevational view of a bumper construction showin my. improved clampplate in position; Fgig. 2 is a sectional view corresponding to the line 2-2 of Fig. 1; Fig. 3 is a section on the line 3-3 of Fig. 1; Fig. 4; is a rear elevation of the bumper clamp showing the same removed from the other parts of the bumper construction; Fi 5 is a detail of a modified form of the mem er 18; Fig. 6 is a view corresponding to Fig. 4.- and showing the modiiied form in osition; Fi 7 is a section taken centrally of ig. 6; and ig. 8 is a view ofthe modified 2i5-form corresponding to Fig. 2.

In Fig.I 1 I have'shown the bumper'construction comprising impact bars 10 and 11, rear bar12 and clamp plate 13. As best seen in Fig. 2,the clamp'plate 13 comprises 'a' front portion and a peripheral ange 14 extending substantially at right angles to the front portion and having notches 15 and` 16 adapted to receive the impact lbars 10 and 11. A spacing plate 17 is provided for holding the 5 impact bars 10 and 11 in proper position with respect to the rear bar 12. Attached tothe front 4plate by welding or other suitable means, not including any means which involves piercing the :front plate, is a collar de.

0- si ated generally by the numeral 18 having a ange 18a adaptedto it snugly against the front plate, a frusto-conical portion 18 into which said flange merges and a flange portion 18 merging into said frusto-conical portion 5 and bein of Eolygonal across section to conform to le s oulder 19 of the plow` bolt 19. The plowbolt 19 as shown is providedwith a frusto-conical head ortion 19", a shoulder 19 and a threaded ank portion 19. A D washer 20 land a lock washer21 cooperates with said bolt and a nut 22 to holdL all the parts of the assembly in fixed position with respect to each other. l In Figs. 5 to 8 inclusive I have shown a slightly modified form-of my invention which diiers from the modification in Figs. 1 to 4 by the construction of the bolt holding collar member shown in detail in Fig. 5,. As shown, this construction differs 'from that of the other modification inthe provision of an upoo wardly extendin portion 18S which is integral with the ange 18d, corresponding to 18 in the other modification, and extends upwardly along the flange 14 of the clamp plate member 13. As is clearl seen in Figs. 5 and 65` 6, the upwardly exten g portion 18g is notched at the corners as shown at 18h to correspond with the ends ci? the notches 15 and 16.' In this way the bumper bars 10 and 11 'engage the portion 18g in the notches 18h and 70 thereby take the stress off the weld' between the collar and the plate 13. This fia-nge 181 preferably extends very slightly beyond the edges of the notches 15 and 16 whereby substantially all the tension is carried by the collar instead of the weld same and the clamp plate.

From the foregoingit will be seen that I have provided a .bumper construction in which a single plate may, when constructed A8o of proper material, serve the mechanical function of clamp plate and be adaptable for receiving a high polish to present a smooth and uninterrupted polished surface without the use of a veneering sheet of'metal. 85

Having thus described my invention, what Inlaim'is:` i

.1. In a bumper construction, a pair of spaced impact bars, a secondary bar spaced rearwardly from said impact bars, and means for holdin saidbars'in position with joint between `the vrespect to each ot er, said means including'a clamp platev having a peripheral ange, notches in said flange to receive said impact bars, a spacing plate between said impact 95 bars and said rear bar and'means for holding ,said plates and bars in fixed relation including a collar attached tothe rear surface of said olampiplate, a bolt passing through a portion of said collar and held thereby in 10 tached to the surface of said said bolt in substantiall through said spacing bars, a spacing plate between said iin clamp fixed relation to said clamp plate, said bolt v passing through said spacing plate and said rear bar and a nut cooperating with said bolt to maintain the parts of said construction in fixed relation to each other.

2. A bumper construction including a clamp plate, a headed bolt, and a collar attached to the surface of said late and holding said bolt in substantially xed relation to said plate, all parts of said bolt being on the same side of said plate.

3. In a bumper construction, a pair' of spaced impact bars, a supporting bar spaced rearwardly from said impact bars, and means for holding said bars in position with respect to each other, said means including a clamp plate having a peripheral liangc, notches in said flange to receive said impact act bars and said rear bar and means for hol ing said plates and bars in fixed relation includin a collar attached to the rear surface of said clam plate, a bolt passin through a portion oa said collar and heli? thereby in fixed relation to said clamp plate, said bolt passing through said spacing plate and said rear bar and a 'nut cooperating with said bolt to maintain the parts of said construction in fixed relation to each other, said collar including a lanere tting against said plate and a truste-conical portion.

4. A. bumper construction including a clamp plate, a headed bolt, and a collar attached to the surface of said plate and holding said bolt in substantially fixed relation to said plate, all parts of said bolt being on the saine side of said plate, said collar including a flangetting against said plate and a truste-conical `portion. y

5. A. bumper construction including a clamp plate, a headed bolt, and c. collar atlate and holding xed relation to said plate, all parts of said bolt being on the same side of said plate, said collar including a flange tting against said plate and a frusto-conical portion, and said collar further including a dange of polygonal shape.

6. ln a bumper construction, a pair o' spaced impact bars, a supporting bar spaced rearwardly from said impact bars, and means for holdin said bars in position with respect to each ot er, said means including a clamp plate having a peripheral ange, notches in said ange to receive said impact bars, a spacing plate between said impact bars' and said rear bar and means for holdin said plates and bars in fixed relation inclu ing a collar attached to the rear surface of said late, a bolt assing through a portion of sai collar and eld thereby in fixed relation to said clamp plate, said bolt passing and a nut cooperating with said bolt to mainn tain the parte o said construction in fixed plate and said rear bar relation to each other, said collar including a flange fitting against said plate and a frustoconical portion, said plate having a flange thereon, and notches in said flange, said collar also having a portion integral therewith and extending along said flange as far as the edge of said notches.

7. A bumper construction including a clamp plate, a headed bolt, and a collar attached to the surface of said plate and holding said bolt in 4substantially fixed relation to said plate all parts of said bolt being on the same side of said plate, said collar including a flange fitting against said plate and a rusto-conical portion, said plate having a flange thereon, and notches in said flange, said collar also having a portion integral therewith and extending along said ange as far as the edge of said notches.

8. A bumper construction including a clamp plate, a headed bolt, and a collar attached to the surface of said plate and holding said bolt in substantially iixed relation to said plate, al1 parts of said bolt being on the same side of said plate, said collar including a flange fitting against said plate and a frusto-conical portion, said plate having a flange thereon, and notches in said `ange, said collar alsdhaving a portion integral therewith and extending along said an e slightly beyond the edge of said notc es.

9. Bumper construction comprising a clamp plate having an uninterrupted front face, a separate bolt, and means permanently secur ing said bolt to the rear face of said plate.

10. Bumper construction comprising a clamp plate having an uninterrupted front face and a socket on one face and a bolt having its head permanently secured in' said soclret.

ll. vBumper construction including a clam late having a continuous front ace, a helpt avin a laterally projecting portion at one end a jacent the rear face of the plate, said rear face having means permanently interloclred `with said portion o the bolt.

l2. Ai bumper clamp construction comprising a clamp plate, a separate headed bolt, and means carried by said plate and permanently einbracin .the bolt head, said means and bolt being disposed entirely on one side of said plate.

i3. A clamp construction comprising a plate, a separate headed bolt, and means interural with said plate and engaging that'surace of said head which faces away rrom GSU 'the axis of the clcm plate, a bolt, and means permanently coup 'ng seid bolt to engaging said late at points remote from poed entirely on one side `of said plate.

plate 4substantiazll closing one end "oi the socket, and a bolt aving its head permanently secured in said socket, said socket engaging said plate at points remote from theaxls of the bolt, to thereby avoid localization of stresses from the bolt. N

In testimony whereof, I hereunto ax my signature.

. HERBERT S. JANDUS.

ate, said means l 1t, to avoid, localization of stresses .from the bolt, saidfbolt being dig- Bumper construction comprising` a" .ciamp plate having a, socket on one face said 1 

